#!/usr/bin/env python3
# subunit: extensions to python unittest to get test results from subprocesses.
# Copyright (C) 2009 Robert Collins <robertc@robertcollins.net>
#
# Licensed under either the Apache License, Version 2.0 or the BSD 3-clause
# license at the users choice. A copy of both licenses are available in the
# project source as Apache-2.0 and BSD. You may not use this file except in
# compliance with one of these two licenses.
#
# Unless required by applicable law or agreed to in writing, software
# distributed under these licenses is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# license you chose for the specific language governing permissions and
# limitations under that license.

"""Filter a subunit stream to get aggregate statistics."""

from optparse import OptionParser
import sys
import unittest

from subunit import DiscardStream, ProtocolTestCase
try:
    from junitxml import JUnitXmlResult
except ImportError:
    sys.stderr.write("python-junitxml (https://launchpad.net/pyjunitxml or "
                     "http://pypi.python.org/pypi/junitxml) is required for this filter.")
    raise

parser = OptionParser(description=__doc__)
parser.add_option("--no-passthrough", action="store_true",
                  help="Hide all non subunit input.", default=False, dest="no_passthrough")
parser.add_option("-o", "--output-to",
                  help="Output the XML to this path rather than stdout.")
parser.add_option("-f", "--forward", action="store_true", default=False,
                  help="Forward subunit stream on stdout.")
(options, args) = parser.parse_args()
if options.output_to is None:
    output_to = sys.stdout
else:
    output_to = open(options.output_to, 'wb')
try:
    result = JUnitXmlResult(output_to)
    if options.no_passthrough:
        passthrough_stream = DiscardStream()
    else:
        passthrough_stream = None
    if options.forward:
        forward_stream = sys.stdout
    else:
        forward_stream = None
    test = ProtocolTestCase(sys.stdin.buffer, passthrough=passthrough_stream,
                            forward=forward_stream)
    result.startTestRun()
    test.run(result)
    result.stopTestRun()
finally:
    if options.output_to is not None:
        output_to.close()
if result.wasSuccessful():
    exit_code = 0
else:
    exit_code = 1
sys.exit(exit_code)
